# Data Dictionary - Participation

Field | Type | Description
--- | --- | ---
nflverse_game_id | character | nflverse identifier for games. Format is season, week, away_team, home_team
old_game_id | character | Legacy NFL game ID.
play_id | integer | Numeric play id that when used with game_id and drive provides the unique identifier for a single play.
possession_team | character | String abbreviation for the team with possession.
offense_formation | character | Formation the offense lines up in to snap the ball.
offense_personnel | character | Number of running backs, tight ends, and wide receivers on the field for the play. If there are more than the standard 5 offensive linemen and 1 quarterback, they will be listed here as well.
defenders_in_box | integer | Number of defensive players lined up in the box at the snap.
defense_personnel | character | Number of defensive linemen, linebackers, and defensive backs on the field for the play.
number_of_pass_rushers | integer | Number of defensive player who rushed the passer.
players_on_play | character | A list of every player on the field for the play, by gsis_it_id
offense_players | character | A list of every offensive player on the field for the play, by gsis_id
defense_players | character | A list of every defensive player on the field for the play, by gsis_id
n_offense | integer | Number of offensive players on the field for the play
n_defense | integer | Number of defensive players on the field for the play
ngs_air_yards | double | Distance (in yards) that the ball traveled in the air on a given passing play as tracked by NGS
time_to_throw | double | Duration (in seconds) between the time of the ball being snapped and the time of release of a pass attempt
was_pressure | logical | A boolean indicating whether or not the QB was pressured on a play
defense_man_zone_type | character | A string indicating whether the defense was in man or zone coverage on a play
defense_coverage_type | character | A string indicating what type of cover the defense was in on a play